It doesn’t look like WordPress supports the adding of new status types to the quick edit. The code that displays that quick edit post status change is in: /wp-admin/includes/template.php Line 1095 through 1112 for WordPress 3.0. I’ll create a ticket (#14124), so this isn’t a problem in future releases.

The other way of editing the post status is with the Publish meta box. It doesn’t mean like you can add an additional status type to that either. It can be found in /wp-admin/includes/meta-boxes.php

The option you have left is to replace the current Publish meta box with your own function in a plugin you or someone develops. I couldn’t quickly do this for you. I’d search for custom post type, maybe, if you wanted to do this yourself.

The option you have left is to replace the current Publish meta box with your own function in a plugin you or someone develops.

Dan,

How would I structure a plugin to replace the current publish meta box? I can handle the php/programming of it, but I’m new to programming WP, so I don’t know how WP would “replace” the existing function?

If I simply copy the code from meta-boxes.php (into a plugin) & edit a few things here & there, how would I tell WP to use the new meta-boxes code?